#include<stdio.h>
//#include<string.h>
int mystrlen(const char* s);
int main(int argc,char const *argv[]){
char line[] = "hello";
printf("mystrlen=%lu\n",mystrlen(line));
printf("sizeof=%lu\n",sizeof(line));
return 0;


}
int mystrlen(const char* s){
/*int cnt=0;
  while(*s!='\0'){
     s++;
	 cnt++;
  } 
  return cnt;*/
	int idx=0;
	while(s[idx]!='\0'){
	idx++;
	}
	return idx;
}
